Question

在模拟器中没有错误。 退出应用程序时自动退出，我不想要。人们可以帮助我。当用户使用“返回”按钮退出应用程序时，Android中的后台服务将停止运行。如果应用程序位于前台或后台，则相同的服务可以正常工作（单击HOME按钮）。

有3例：

保持应用运行：每15秒显示一次通知（确定）。单击HOME按钮将应用程序置于后台：通知继续显示（OK）单击BACK按钮（这将关闭应用程序）：后台服务已停止，不再显示通知（BUG）预期的行为

同样在＃3的情况下，通知应该每15秒继续运行。

我的整个来源如下

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
   <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.javacodegeeks.android.androidserviceexample.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service
            android:name="com.javacodegeeks.android.androidserviceexample.MyService"
            android:enabled="true"
           >
        </service>
    </application>

</manifest>

MYSERVICE

 package com.javacodegeeks.android.androidserviceexample;

import android.app.Service;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.IBinder;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.Toast;

public class MyService extends Service {
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // TODO Auto-generated method stub
        return START_STICKY;
    }

    public MyService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public void onCreate() {
        super.onCreate();

        Toast.makeText(this, "The new Service was Created", Toast.LENGTH_LONG).show();

        final WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

        final ImageView viewGallery = new ImageView(this);
        viewGallery.setImageResource(R.drawable.ic_launcher);

        final WindowManager.LayoutParams params = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_PHONE, WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.TRANSLUCENT);

        params.gravity = Gravity.TOP | Gravity.LEFT;
        params.x = 0;
        params.y = 100;

        windowManager.addView(viewGallery, params);

        viewGallery.setOnTouchListener(new View.OnTouchListener() {
            private int initialX;
            private int initialY;
            private float initialTouchX;
            private float initialTouchY;

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    initialX = params.x;
                    initialY = params.y;
                    initialTouchX = event.getRawX();
                    initialTouchY = event.getRawY();
                    return true;
                case MotionEvent.ACTION_UP:
                    return true;
                case MotionEvent.ACTION_MOVE:
                    params.x = initialX
                            + (int) (event.getRawX() - initialTouchX);
                    params.y = initialY
                            + (int) (event.getRawY() - initialTouchY);
                    windowManager.updateViewLayout(viewGallery, params);
                    return true;
                }
                return false;

            }
        });
    }



    @Override
    public void onStart(Intent intent, int startId) {
        // For time consuming an long tasks you can launch a new thread here...
        Toast.makeText(this, " Service Started", Toast.LENGTH_LONG).show();


    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();

    }
}

Android窗口覆盖错误。无窗口破坏表面。设备真实

0 个答案: